Advice needed. Starter rewind from 6 volt to 12 volt

[bmorgil]

I would leave it stock and restore the 6 volt system or, convert it to 12 volts completely.

There are reasons for converting to 12 volts. On mine there was little of the 6 volt system left. 12 volt systems are more "modern" as far as batteries etc. 12 volt systems are more forgiving of poor maintenance. 6 volt systems are quite adequate however. Most have their own personal preference. On a CJ2A, there is little to convert as far as bulbs etc. The coil needs to be twelve volts. LarrBeard has a good suggestion below to make it even easier. Use the 12 to 6 volt converter on everything but the starter, horn and the ignition + to the new 12v coil. The horn and the starter won't care about the voltage increase. Otherwise, you will need to change all the bulbs, the coil and, the fuel gauge will need attention.

If the 6 volt generator is working, there is little reason to convert it "up" to 12 volts. Just get it all in good working order and you are all set. 6 volt systems are fine when well maintained. I cannot think of a "good" way to charge "up" from a 6 volt generator to 12 volts reliably.